When I was on HRT, I had reflux all the time. Was on aciphex for about 5 years. I was able to come off the aciphex when I came off the HRT.
I am in menopause now, but I can tell you that I get reflux back at the same time I get my other hormonal symptoms........headaches, increased appetite, diarrhea, etc. Even though I'm in menopause, I still get hormonal fluctuation symptoms and reflux is definitely part of it.
I think that low estrogen can maybe make our esophoguses a bit limp. I also get food caught in my esophogus more during the hormonal times. Ain't it fun??